Apiculture biocide for the control and prevention of honeybee diseases. The technology, addresses a relevant problem in apiculture as honeybee mortality has been rising at unprecedented rates. This Biocide is based on a natural extract which controls and prevents the pathogen Paenibacillus larvae (American Foulbrood). The biocide presents significant advantages in comparison with the current alternatives: antibiotics (hampered by regulatory restrictions) and incineration (loss of the entire honey production). The biocide inhibits spore growth thus providing long-term protection for a range of honey bee diseases, effectively protecting honeybee health from American Foulbrood. It leaves no toxic traces in final products as the main compound is a natural extract.